Trolley-head.



R. C. COTTON.

TROLLEY HEAD.

APPLICATION FILED MAY 1s, 1912.

055.140. Patented Mar.4,1913.

ROBERT C. COTTON, 0F THE UNITED STATES ARMY.

TRLLEY-HEAD.

To all whom t may concern Be it known that I, Bonnin.' C. tQo'rroN, lieutenant, U. S. Army, a citizen of the United States, residing at Quincy, in the county of Adams and Statie oit Illinois, have invented eert-:iin new and iise'l'nl lniproie ments in Trolley-'l'Ie-id'iig and fl do lierehiy declare the following to be :i full, clear, :ind exact f leseription ol the invention,niieh ne will enable others skilled in the art to whieh it appertains to .i'nalre and not: the saine.

My invention relateS to iini'irmeinentsl iii trolley heads, and it eonsists in the ronstrneY tions, combinations and arraiigeinents herein described and etainied.

An object ol' my invention i to provide an improved trolley head` in which the trolley wheel is 'y"i xl. liii;rl \,r supported in po sit'ion :t'or independent niorenirnt in two perpendicular planenextending angiilarly to the trolley wire.

A further object ol iii invention ,is to provide a Strongy and dnrahle trolle \v head for ellieiently ninintiiiniirgl eoiitiirt with the trolley wire inider all praetieii' ronditions7 and in wliieh all Yparte :iril proteizted against injury or the e \ntr:in-.o ot dirt.

In the :ii-oonipanyinpj drawings torniinny :i parti. ot thiev application. and in wliieli Simi-- lar relereiiee synihols indiriito eorrenpondino parts in the several views:---li`ignre l is a side elevation il iti-ating one eiiihodiiiient of my invention applied to :i trolley oar: Fig. 2 is a detail elevation, showing,y my ini proved construction partly in Seetion; Fin'. 3 is an enlarged detail sertion ot one of the rotatable members shown in Fin'. litig. l is a section on the line -l l ot' ltie. It: :ind Fig. 5 is :in elevation ol` the trolleyY wheel Shown iii l `ig. 2.

Referring' to the dra, "ne t indiriiteI :i tIOllGy polo i'nil'w'ilig :i -f-tpilnllt Q t\tet llli`1` perpendirnlai-l)v thereto and provided with an tiXiiill yxti-iiiliog pi\oi E :ind with lng'si it constituting' hearing' dope tor the endg ol' a Spiral spi-inel 5. Ai nieniher (3 is rot iitiihly monnted on the spindle it and logre l, and provided with diaineti'ieall)Y opposite lng# 7 hearing?)` against' the ende olE said :'-Ipriii,;` 5; the Spring ends heini; prel'eralil)v l'liittened` or of'l'set radiall)Y tor .seonrely eligagiiig;` said Specification of Letters Patent.

Application 'tiled May 18,

Patented M a1'. 1-, 1913.

1912. Serial N0.698,257. Y'

lugs -l and T for yieldingly maintaining the rotatable nieniher G in norn'ial position and resisting rotation thereof in either direction. ',lhe Spindle f2 and member C are shown provided with additional cooperating lugs 8 and t), to insure a firm hearing for said rotatahle iiieiiiher.

The ineniher ti carries a spindle 10 extending,r perpeiidienlarl)7 to the spindle 2, for rotatahlyY supporting a ineniher ll; rotationof said nieniher Ytl in either direction being jifieli'liigrliY resisted hy a npring 12 engaging .Inge` .172i :ind "tft on fi-:aid inenilier and spindle in thel manner just deeerihed in refereiiee to the rotatiihle n'ieiiiher ('i. A trolley wheel 15 in join-nailed on said nieniher tl in position for engaging; the iisniil trolleyY wire 1G; said rotatable iiieiiihers t' and 1t yieldinely slipportingT said wheel toi: universal movement to insure the iiiaiiilenanee of an ellieient contart with tho trolley wire onder all practical eonilitions. l l. desired,` the trolley wheel iiiiiy he provided with a series of grooves 17 t'or engaging the trolley wire, or a plurality nl' indepein'lent groored wheels may he ein ployed. l prel'orahtr ei'iiploy a construction haring' an odd iinnilier ol' such grooves poeitioiied Sw'ninietiirallr to the axis ot the wheel-rai'rying nieniher A1l. in order to pro- \'ide :i reiitrzil foiroore ol the series for nor nialliv engagingl the (rolle)y wire.

l hare ilhi trated and desifrihed preferred :ind Satislartory eonstrnetioiie, lint elianjgesi eonld he niiide within the spirit and seope ot" nii' invention.

l. ln a trolley head, the eomhii'iation of :i Spindle extending' perpendienlarl)v 'from the trolle'iv pole` :i hollow nieni'oer i'otatalily y iipported :ihoiit said Spindle` a lepindle extendine' perpeiidieiilail'i' l'roni ,:iid hollow nienilier. :i hollow wheel-rnri'lvingr nieinl'ier rotiitiihly .-nippin'ted ahont Said last spindle, :i eoil prinp' enrireline' einh ol Said spin` dlen. and eopiiiiitingT ings on said spindles :ind hollow iiieinhers for engaging' the respeetire ends ot' `said coil springs.

Q. ln a trolley head, the eonihination ot' :i apindle extending perpendiciilaily from the trolley pole and terminating in a redneed axial pivot, a lrollow membeiurotatably mounted on said pvot aboutv said spinmembers for engaging the respective ends of 'dle, a spindle extending perpendicularly said coil springs. f

from said hollow member `and Terminating in :1 reduced axial pvet, :1 hollow Wheeluurrying member rotatably mounted on snd larsl pivot about said spindle, a coil Spring enculng each of said spindles, and copelijating lugs on said spindles and hollow In testimony whereof, I ax my sglm ture, in presence of two Witnesses.

RQBERT C. COTTON. Witnesses z HENRY E. SCHMmDEsKAMP, ALMA CONRAD. 

